/*
 * menuDropdown.js - implements an dropdown menu based on a HTML list
 * Author: Dave Lindquist (dave@gazingus.org)
 * Adapted to display menus on mouseover, not onclick, and to add a delay before hiding
 */

var IExplorer = false;								//ergänzt am 2.3.06 Rai
var ExistIFrame = false;							//ergänzt am 2.3.06 Rai
if (navigator.userAgent.indexOf('MSIE') != -1) {	//ergänzt am 2.3.06 Rai
	IExplorer = true;								//ergänzt am 2.3.06 Rai
}													//ergänzt am 2.3.06 Rai
//if (document.getElementById('coverhelper')) {		//ergänzt am 2.3.06 Rai
if ((window.location.pathname.indexOf("Erweiterungen_")) != -1) {		//ergänzt am 2.3.06 Rai
	ExistIFrame = true;								//ergänzt am 2.3.06 Rai
}													//ergänzt am 2.3.06 Rai

var currentMenu = null;
var timer = null;

if (!document.getElementById)
	document.getElementById = function() { return null; }

function initializeMenu(menuId, actuatorId) {
	var menu = document.getElementById(menuId);
	var actuator = document.getElementById(actuatorId);

	if (menu == null || actuator == null) return;

	//if (window.opera) return; // I'm too tired

	actuator.onmouseover = function() {
		if (currentMenu == null) {
			this.showMenu();
			if ((IExplorer) && (ExistIFrame) && ((actuatorId == "EventsActuator") || (actuatorId == "ThemesActuator"))) {		//ergänzt am 2.3.06 Rai - nur bei IE wirksam
				document.getElementById("coverhelper").style.display = "block";					//ergänzt am 2.3.06 Rai
				if (actuatorId == "EventsActuator") {											//ergänzt am 2.3.06 Rai
					document.getElementById("coverhelper").style.left = "66 px";				//ergänzt am 2.3.06 Rai
					document.getElementById("coverhelper").style.width = "133 px";				//ergänzt am 2.3.06 Rai
				}																				//ergänzt am 2.3.06 Rai
				else {																			//ergänzt am 2.3.06 Rai
					document.getElementById("coverhelper").style.left = "141 px";				//ergänzt am 2.3.06 Rai
					document.getElementById("coverhelper").style.width = "137 px";				//ergänzt am 2.3.06 Rai
				}																				//ergänzt am 2.3.06 Rai
			}																					//ergänzt am 2.3.06 Rai
		}
		else {
            currentMenu.style.visibility = "hidden";
            if (ExistIFrame) {
	            document.getElementById("coverhelper").style.display = "none";			//ergänzt am 2.3.06 Rai
			}
            this.showMenu();
			if ((IExplorer) && (ExistIFrame) && ((actuatorId == "EventsActuator") || (actuatorId == "ThemesActuator"))) {		//ergänzt am 2.3.06 Rai - nur bei IE wirksam
				document.getElementById("coverhelper").style.display = "block";					//ergänzt am 2.3.06 Rai
				if (actuatorId == "EventsActuator") {											//ergänzt am 2.3.06 Rai
					document.getElementById("coverhelper").style.left = "66 px";				//ergänzt am 2.3.06 Rai
					document.getElementById("coverhelper").style.width = "133 px";				//ergänzt am 2.3.06 Rai
				}																				//ergänzt am 2.3.06 Rai
				else {																			//ergänzt am 2.3.06 Rai
					document.getElementById("coverhelper").style.left = "141 px";				//ergänzt am 2.3.06 Rai
					document.getElementById("coverhelper").style.width = "137 px";				//ergänzt am 2.3.06 Rai
				}																				//ergänzt am 2.3.06 Rai
			}																					//ergänzt am 2.3.06 Rai
        }
    }

    actuator.onmouseout = function() {
        if (currentMenu) {
        	if (ExistIFrame) {
	            timer = setTimeout('currentMenu.style.visibility = "hidden"; document.getElementById("coverhelper").style.display = "none";', 600);
			}
			else {
	            timer = setTimeout('currentMenu.style.visibility = "hidden";', 600);
			}
	    } //Abfrage auf Iframe ergänzt am 2.3.06 Rai
    }
    
    menu.onmouseover = function() {
        window.clearTimeout(timer);
    }

    menu.onmouseout = function() {
    	if (ExistIFrame) {
            timer = setTimeout('currentMenu.style.visibility = "hidden"; document.getElementById("coverhelper").style.display = "none";', 600);
		}
		else {
            timer = setTimeout('currentMenu.style.visibility = "hidden";', 600);
		}
    } //Abfrage auf Iframe ergänzt am 2.3.06 Rai
  
    actuator.onclick = function() {
		top.location.href = actuator.href;
        return false;
    }

    actuator.showMenu = function() {
        window.clearTimeout(timer);
		menu.style.left = (this.offsetLeft) + "px";
		menu.style.top = (this.offsetTop) + this.offsetHeight + "px";
        menu.style.visibility = "visible";
        currentMenu = menu;
    }
}